Method of rolling plates.



A. 'LAMBBRTBTIZ\\ LEEI'EOD OP ROLLING PLATES.

APPLICATION FILED APB. 6, 1907.

Patented Sept. 15, 1908.'

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" vnrrnn siraras narrar o ANDREW LaMBERTo-N,oreoATBRiDGE,SCOTLAND.

METHOD oF'noLLrNG PILATES.

No. ses,9o1.

Appuc'aaon mea April e, 1901'. serial No. 366,745.

T o all rE-om 'Zt ymay concern:

Be ir lmown that I, ANDREW LAMBERTON, a subject of the King of GreatBrit-ain and Irelandand a resident of Coa'ibridge, in the county etLanark, Scotland, have invented certain new and useful Improvements inthe Methods of Rolling Plates, and of which the ollov. is thespecification.

This invention relates to rolling mills of the dass used for theproduction of plates,

sheets, strips, and the like, of iron, steel, or other metal. Hitherto,for this purpose a pair of two-high reversing mills side by side, theone roughing and the other finishing have been used, the plates after asufficient' number et passes through the roughing rolls beingtransferrec1 sidewisc to the finishing rolls. 0r, alternatively,three-high non-reversing rolls havebeen used. W'ith these 20 the lateraltransference of the plates is unnecessary, but the wear upon therolls--particularly upon that in the center-is excessive.

A made according to my invention is non-reversin and may therefore bedriven by a high c ass and economical engine or other motor ruimingcontinuously in one direction. In it, the necessity for lateraltransference of the plat-e and also the duplicate live-roller feedingtables of the usual two- 'gh mill are avoided, while also the rolls arenot, in the three high mill subjected to excessive wear, nor are they,as in it, diiicult of adjustment forndraft.

My invention, consists essentially in arranging in a single or inseparate housings two pairs of nonlrei-*ersing rolls runnin 1n oppositedirections, preferably one rol at least or' which is not driven. Thepairs of 40 rolls are arranged upon different levels, the

lower roll of the upper pair being parallel with and above or on thesame level as the upper roll of the lower pair. Live roller feedingtables of usual form and which may, in usual manner, he brought levelwith the gap of either pair of rolls are provided, and the usual balanceand draft adjustment devices are applied to one roll of each pair.

In order that the invention and the manner of performing the same may beproperly undersood, there are hereunto appended two sheets et'explanatory drawings showing in plan in Figure 1, Sheet 1, and in sideelevation in Fig. 2 Sheet 2, an exam )le of the improved non-reversingrolling n l.

Accordingto-tluslexample the two pairs,

Specification of Letters'Patent.

i l l Patented sept. 15, 1908.

,`B C,'D, of rolls are arranged in a single housing, E, the pair, A, B,Vbeing at a higher level tha-n the pair, C, D. Both rolls, C, D,

are driven, the first motion drive seing upon the shaft of thelowest'roll, D. The upper roll, C,' of this'pair'is driven by pair ofpinions, G, H, while the lower roll, A, of the other pair of rolls isdriven by a. pair of. pinions, J, K. As will he seen in Fig. 1, thisgearing is carried in usual manner in a sep-- arate housing and drivesthe rolls throngli-,

the usual coupling shafts, L. to be understood that this particulararrangement of gearmg is only given by way of It is, of course,

example and that the pairs of rolls-may be i justed to the draft bymeans of me gear, N,

the upper roll, B, of the upper pair, A, B, is raised to pass the plate'freely. The live vroller tables, O, are then brought opposite the lowerpair, C, D, and the plate is passed. The tables, O, are then raised, andthe plate passed back freelythrough the upper rolls, A, B. The tablesare then lowered (and with them the plate) to the lower rolls, C, D, andthe plat-e again passed, and so on until roughing is concluded. The topfinishing roll, B, is then lowered to its operative position above itscom anion roll, the roughing rolls, C, D, acjusted to pass the platefreely, and the plate is then passed and repassed through the upper orfinishing pair of rolls, A,`B, in the same manner as it was passedthrough the lower rolls. C, D, for roughing. Thus the high speed andeconomy in power associated with the threcdligh mill is attained withthe accuracy of drafting only possible with a two-high nnlL What I claimiszy The method of rolling plates in a mill provided with roughing andfinishing rolls arranged in tandem on differentA levels and driven inopposite directions which consists in passing the plate between theclosed roughing rolls, bringing it to the `level of the finishing rolls,returning it between the open finishing rolls, bringing it to thelevelof the roughing rolls, passing it4 again through the latter andrepeating this process until the plate is rea-dy for the finishingrolls, and then passing the plate between closed finishing rolls,bringing it to the level of the rougliing rolls, assing it back between'open roughing rolls, ringing it to the level of the finishing 10 rollsand passing it again between the latter and s o on until the finishingis completed,v substantially as described.

Intestiniony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses.

Y ANDREW L-AimERToN. Witnesses: i DAVID FERGUSON,

WILFRED HENRY. r

